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Analog Devices Inc. OP275GSZ-REEL
- Part No.:
- OP275GSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP275GSZ-REEL.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,597
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Product details
Overview
OP275GSZ-REEL from Analog Devices is a dual bipolar/JFET audio operational amplifier engineered for high-fidelity signal conditioning in professional audio systems. It delivers 6 nV/√Hz voltage noise density, 0.0006% THD+N at 3 V rms, 22 V/µs slew rate, and unity-gain stability in an SOIC-8 package rated for –40°C to +85°C operation.
For engineers reviewing the OP275GSZ-REEL datasheet, OP275GSZ-REEL pinout, OP275GSZ-REEL application, or OP275GSZ-REEL equivalent, key selection criteria include low-noise audio front-end design, distortion-sensitive summing/line-driving tasks, and surface-mount compatibility with ±4.5 V to ±22 V dual supplies.
Technical Context
The OP275GSZ-REEL implements a patented Butler Amplifier front end-hybridizing bipolar transistors for precision and p-channel JFETs for speed-to achieve sub-6 Hz 1/f noise corner and symmetric ±22 V/µs slew rates. Its input stage avoids series gate resistors to preserve low-voltage noise, while internal Zener clamps limit differential input voltage to ±7.5 V.
Output stage features inherent short-circuit protection via a 30 Ω series resistor (ISC+ ≈ 40 mA, ISC– ≈ –90 mA at ±15 V), and phase reversal is mitigated in noninverting configurations using external series resistance per Figure 9. The device maintains stability driving ≥1000 pF capacitive loads without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 6 nV/√Hz at 1 kHz - enables low-noise microphone preamp and ADC driver stages without added filtering |
| THD + Noise | 0.0006% at 3 V rms, 1 kHz, 2 kΩ load - meets studio-grade audio line-level distortion requirements |
| Slew Rate | 22 V/µs (min 15 V/µs) - supports full-swing 20 kHz sine output without slewing-induced distortion |
| Gain Bandwidth Product | 9 MHz - allows stable unity-gain buffer and 10× gain configurations up to 900 kHz |
| Input Offset Voltage | 1 mV (max), typically <200 µV - permits DC-coupled active filters and summing amplifiers without trimming |
| Supply Current | 5 mA per amplifier (max) - enables dual-channel audio processing within 10 mA total budget |
| Common-Mode Rejection | 80 dB (min) over –40°C to +85°C - ensures robust performance in noisy industrial sensor interfaces |
Pinout & Package
OP275GSZ-REEL is housed in an 8-lead narrow-body SOIC (R-8 package), RoHS-compliant and Pb-free, with standard JEDEC MS-012AA footprint (5.00 mm × 4.00 mm body, 1.27 mm lead pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives 600 Ω loads to ±14 V with <0.01% THD+N at ±18 V supply |
| 2 | –IN A | Inverting input of Amp A - virtual ground node in inverting configurations; requires matched source impedance for distortion control |
| 3 | +IN A | Noninverting input of Amp A - susceptible to phase reversal below –13.5 V common-mode; add 3.92 kΩ series resistor if exposed to fault voltages |
| 4 | V– | Negative supply rail - must be decoupled with 0.1 µF ceramic + 10 µF electrolytic per amplifier section |
| 5 | OUT B | Amplifier B output - electrically identical to Pin 1; enables dual-channel line drivers or stereo active filters |
| 6 | –IN B | Inverting input of Amp B - shares same layout rules as Pin 2; critical for balanced differential driver symmetry |
| 7 | +IN B | Noninverting input of Amp B - use same input protection strategy as Pin 3 for system-level fault tolerance |
| 8 | V+ | Positive supply rail - supports ±4.5 V to ±22 V operation; thermal derating required above 85°C ambient |
Key Features
| Feature | Design Value |
|---|---|
| Butler Amplifier Front End | Hybrid bipolar/JFET input stage delivers 6 nV/√Hz noise and 22 V/µs slew rate simultaneously-unachievable with pure bipolar or JFET op-amps |
| Low 1/f Noise Corner | <6 Hz corner frequency ensures flat noise density across full 20 Hz–20 kHz audio band, critical for high-resolution DAC output stages |
| Output Short-Circuit Protection | Internal 30 Ω series resistor limits peak output current to ±40 mA/±90 mA, enabling safe operation in unattended audio equipment |
| Capacitive Load Drive | Stable with >1000 pF loads without external compensation-simplifies PCB layout for long cable drivers and filter networks |
| DC Precision | 1 mV max VOS and 2 nA max IOS enable direct-coupled summing, integrators, and DC servo loops without offset nulling circuitry |
Applications
| Professional Audio Line Driver | High-Fidelity Active Filter |
|---|---|
Use Scenario: Driving balanced 600 Ω analog audio lines over 10 m cables in digital mixing consoles. IC Role / Device Role / Timing Role: Dual-channel differential line driver (Amp A = inverting, Amp B = noninverting) with 30 V p-p swing capability. Use Value: 0.0006% THD+N at 10 V rms and 1 kHz eliminates audible harmonic artifacts in master output paths. | Use Scenario: Implementing linear-phase 3-pole low-pass filtering at 40 kHz in high-end ADC anti-aliasing stages. IC Role / Device Role / Timing Role: Gyrator-based FDNR filter core using matched AC characteristics across both amplifiers. Use Value: Symmetric 22 V/µs slew rate prevents transient overshoot and preserves step response fidelity. |
| Studio Microphone Preamplifier | Industrial Sensor Signal Conditioning |
Use Scenario: Low-noise gain stage for condenser microphone capsules requiring 48 V phantom power interface. IC Role / Device Role / Timing Role: First-stage preamp with 100× gain, DC-coupled to eliminate capacitor-induced phase shift. Use Value: 6 nV/√Hz input noise density dominates system noise floor below 1 kHz, enabling >110 dB SNR. | Use Scenario: Isolating and amplifying low-level bridge sensor outputs in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front end with 80 dB CMRR over temperature. Use Value: 2 µV/°C VOS drift ensures <1 LSB error over –40°C to +85°C in 16-bit measurement systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP270GSZ-REEL | Lower slew rate (2.5 V/µs), higher VOS (250 µV), lower noise (3.5 nV/√Hz), single-channel | Better for ultra-low-noise DC-coupled sensor amps; unsuitable for wideband audio due to bandwidth limitation | Select OP270GSZ-REEL only when sub-100 kHz bandwidth and lowest possible voltage noise dominate over speed |
| AD823ARZ-REEL7 | Rail-to-rail output, higher supply current (9.5 mA), wider GBW (16 MHz), JFET input only | Enables single-supply audio interfaces and higher-speed active filters but lacks bipolar/JFET hybrid sonic character | Choose AD823ARZ-REEL7 when RRO operation or >10 MHz bandwidth is mandatory, accepting higher quiescent power |
Compared with OP275GSZ-REEL, OP270GSZ-REEL trades speed for ultra-low noise in DC applications, while AD823ARZ-REEL7 sacrifices the unique bipolar/JFET sonic signature for rail-to-rail flexibility and higher bandwidth-neither is pin-compatible, requiring layout revision.
Availability
OP275GSZ-REEL is available at Aetrix Electronics and suitable for professional audio equipment, industrial sensor signal chains, and high-fidelity test instrumentation requiring stable component supply across extended temperature ranges.
Supply support for OP275GSZ-REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The OP275GSZ-REEL belongs to Analog Devices' precision audio op-amp product line, designed specifically for applications demanding simultaneous low noise, low distortion, and wide bandwidth in surface-mount form factors.
FAQ
What is the maximum supply voltage rating for OP275GSZ-REEL?
The OP275GSZ-REEL has an absolute maximum supply voltage rating of ±22 V. Operation beyond this range risks permanent damage. The recommended operating range is ±4.5 V to ±22 V, with thermal derating required above +85°C ambient. At ±22 V, supply current increases to 5.5 mA per amplifier, and output swing reaches ±13.9 V into 2 kΩ loads.
Does OP275GSZ-REEL require external compensation when driving capacitive loads?
No, the OP275GSZ-REEL is internally compensated for unity-gain stability and remains stable driving capacitive loads up to 1000 pF without external components. Its design maintains phase margin >62° even under heavy capacitive loading, as verified in TPC 16. For loads exceeding 1000 pF, consider isolating the capacitor with a series resistor to preserve bandwidth.
How does the input stage architecture of OP275GSZ-REEL reduce distortion in audio applications?
The OP275GSZ-REEL uses a proprietary Butler Amplifier front end combining bipolar transistors for low noise and p-channel JFETs for high slew rate. This hybrid structure achieves 0.0006% THD+N by minimizing crossover distortion and maintaining symmetric slew behavior-critical for preserving harmonic integrity in line-level audio signals up to 20 kHz.
Can OP275GSZ-REEL be used in single-supply configurations?
Yes, OP275GSZ-REEL supports single-supply operation with appropriate biasing. Its input common-mode range extends to –10.5 V and +10.5 V relative to V–, allowing use with V– grounded and V+ = +15 V or +30 V. Output swing is asymmetric in single-supply mode (e.g., 0 V to +13.5 V into 2 kΩ), requiring careful headroom planning for AC-coupled audio paths.
What is the purpose of the 3.92 kΩ resistor recommended in Figure 9 of the OP275GSZ-REEL datasheet?
The 3.92 kΩ resistor in series with the noninverting input (Figure 9) prevents output voltage phase reversal when input common-mode voltage drops below –13.5 V-a condition that can occur during sensor fault events. This resistor limits input current during overvoltage transients while preserving the OP275GSZ-REEL's low-noise performance, as no series resistance is placed in the inverting path.
OP275GSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 22V/µs
- Gain Bandwidth Product:
- 9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 4mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP275GSZ-REEL FAQ
1.How can I place an order for OP275GSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP275GSZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OP275GSZ-REEL reliable?
The price and inventory of OP275GSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP275GSZ-REEL is usually 5 days.
3.What payment methods are accepted for OP275GSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP275GSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP275GSZ-REEL?
OP275GSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP275GSZ-REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OP275GSZ-REEL?
For technical support, including OP275GSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP275GSZ-REEL requirements.
6.How does Aetrix verify that OP275GSZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP275GSZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OP275GSZ-REEL meets industry standards.
7.What is the process for return or replacement of OP275GSZ-REEL?
All OP275GSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP275GSZ-REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OP275GSZ-REEL part is unused and in its original packaging.
Return procedure for OP275GSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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